23640011131 has 8 divisors (see below), whose sum is σ = 25794909504. Its totient is φ = 21486080520.

The previous prime is 23640011077. The next prime is 23640011141. The reversal of 23640011131 is 13111004632.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23640011131 - 2⁹ = 23640010619 is a prime.

It is a super-2 number, since 2×23640011131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23640011141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190381 + ... + 289006.

It is an arithmetic number, because the mean of its divisors is an integer number (3224363688).

Almost surely, 2^23640011131 is an apocalyptic number.

23640011131 is a deficient number, since it is larger than the sum of its proper divisors (2154898373).

23640011131 is a wasteful number, since it uses less digits than its factorization.

23640011131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483881.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 23640011131 its reverse (13111004632), we get a palindrome (36751015763).

The spelling of 23640011131 in words is "twenty-three billion, six hundred forty million, eleven thousand, one hundred thirty-one".